MLA

Aloncle, François-Joseph, active 1758-1781, artist. [Cabinet cup and saucer, decorated with birds perched in exotic landscapes] [realia].. [not before 1756]. https://collections.library.yale.edu/catalog/16721006.

APA, 6th edition

Aloncle, François-Joseph, active 1758-1781, artist. ([not before 1756])[[Cabinet cup and saucer, decorated with birds perched in exotic landscapes] [realia].]. https://collections.library.yale.edu/catalog/16721006.